229.00 USD

Almost impossible to find full-wave rectifier tubes manufactured in Holland by Philips; we believe 1940's to 1960's production. These beautiful glass dome-shaped chrome top tubes, extremely rare NOS, come printed in white PHILIPS MADE IN HOLLAND 367, with 4 pin UX4 bases, and wrapped in paper. Boxes are yellow, white and blue, or corrugated cardboard standard Philips printed 367.


Tube Matching
Tube Matching
6.00 USD by tube


A tube may have one, two, or three internal sections depending on the purpose of the tube; somtimes these sections are all the same, sometimes they are different. Due to manufacturing and material tolerances, there may be slight differences between the original specification and the actual tube. Tube matching tests each one of these internal sections and selects tubes, compared to original specifications at manufacture, for balanced performance and good sound.


All our tubes are tested by us prior to packing on our Stark, AVO, Simpson or RF Laboratories Inc. calibrated testers. On request for tube matching, tubes are matched for Mutual Conductance in Micromhos and Plate Current in Milliamps on our Amplitrex or Radioelec Duovac testers, with results printed for each  individual tube. Certain tubes difficult to test are matched for Mutual Conductance in Micromhos only on one of our regular calibrated testers. On request we can also test for Microphonics.


4 Items

Data sheet

4 pin UX4
Boite type
Full-wave rectifier
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